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authorJanosch Frank <frankja@linux.vnet.ibm.com>2016-01-11 16:17:37 +0100
committerPaolo Bonzini <pbonzini@redhat.com>2016-01-26 15:58:12 +0100
commit6fbff649d75137fd808aaab1e78504a786bcdd29 (patch)
tree3d3cc27771a23ba20057e54e475c7d4f25e58739 /scripts/kvm
parenta6ad61f98742b881b0bce77efb5664d461735c6b (diff)
scripts/kvm/kvm_stat: Cleanup of path variables
Paths to debugfs and trace dirs are now specified globally to remove redundancies in the code. Reviewed-by: Jason J. Herne <jjherne@linux.vnet.ibm.com> Signed-off-by: Janosch Frank <frankja@linux.vnet.ibm.com> Message-Id: <1452525484-32309-8-git-send-email-frankja@linux.vnet.ibm.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'scripts/kvm')
-rwxr-xr-xscripts/kvm/kvm_stat14
1 files changed, 7 insertions, 7 deletions
diff --git a/scripts/kvm/kvm_stat b/scripts/kvm/kvm_stat
index d53945ee0c..5ca09f46d8 100755
--- a/scripts/kvm/kvm_stat
+++ b/scripts/kvm/kvm_stat
@@ -25,15 +25,14 @@ from collections import defaultdict
class DebugfsProvider(object):
def __init__(self):
- self.base = '/sys/kernel/debug/kvm'
- self._fields = walkdir(self.base)[2]
+ self._fields = walkdir(PATH_DEBUGFS_KVM)[2]
def fields(self):
return self._fields
def select(self, fields):
self._fields = fields
def read(self):
def val(key):
- return int(file(self.base + '/' + key).read())
+ return int(file(PATH_DEBUGFS_KVM + '/' + key).read())
return dict([(key, val(key)) for key in self._fields])
VMX_EXIT_REASONS = {
@@ -328,7 +327,8 @@ def _perf_event_open(attr, pid, cpu, group_fd, flags):
PERF_TYPE_TRACEPOINT = 2
PERF_FORMAT_GROUP = 1 << 3
-sys_tracing = '/sys/kernel/debug/tracing'
+PATH_DEBUGFS_TRACING = '/sys/kernel/debug/tracing'
+PATH_DEBUGFS_KVM = '/sys/kernel/debug/kvm'
class Group(object):
def __init__(self, cpu):
@@ -353,7 +353,7 @@ class Event(object):
attr = perf_event_attr()
attr.type = PERF_TYPE_TRACEPOINT
attr.size = ctypes.sizeof(attr)
- id_path = os.path.join(sys_tracing, 'events', event_set,
+ id_path = os.path.join(PATH_DEBUGFS_TRACING, 'events', event_set,
tracepoint, 'id')
id = int(file(id_path).read())
attr.config = id
@@ -378,7 +378,7 @@ class Event(object):
class TracepointProvider(object):
def __init__(self):
- path = os.path.join(sys_tracing, 'events', 'kvm')
+ path = os.path.join(PATH_DEBUGFS_TRACING, 'events', 'kvm')
fields = walkdir(path)[1]
extra = []
for f in fields:
@@ -476,7 +476,7 @@ class Stats:
if not os.access('/sys/kernel/debug', os.F_OK):
print 'Please enable CONFIG_DEBUG_FS in your kernel'
sys.exit(1)
-if not os.access('/sys/kernel/debug/kvm', os.F_OK):
+if not os.access(PATH_DEBUGFS_KVM, os.F_OK):
print "Please mount debugfs ('mount -t debugfs debugfs /sys/kernel/debug')"
print "and ensure the kvm modules are loaded"
sys.exit(1)